Prespliting for final wall rock control at spillway in Indira Sagar Polavaram Dam Project
G. Gopinath, H.S. Venkatesh, Babu T. Rajendra
Available Online November 2016.
- https://doi.org/10.2991/rare-16.2016.87How to use a DOI?
- Presplitting; wall control; final slope
- One of the challenging job in irrigation and surface dam construction projects is excavation of large quantity of rock in short period of time and achieving the final stable walls. Indira Sagar Polavarm Irrigation Project in India is one such project required about 36.5 million cubic meter of hard rock with final stable wall of about 8 lakhs square meter for the construction of earth cum rock fill dam. The slopes abutting the dam site, spillway, intake area, approach channel, powerhouse area etc is of utmost importance and their stability needs to be ensured right from the beginning and remain stable for several decades. Unstable wall requires additional supports which leads to increase construction cost as well as project completion time. Therefore, damage to the wall rock was controlled by adopting pre-split blasting technique. This paper discusses in detail the design and field implementation of pre-split blasts successfully carried out at spillway of Indira Sagar Polavaram Project.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - G. Gopinath AU - H.S. Venkatesh AU - Babu T. Rajendra PY - 2016/11 DA - 2016/11 TI - Prespliting for final wall rock control at spillway in Indira Sagar Polavaram Dam Project BT - Recent Advances in Rock Engineering (RARE 2016) PB - Atlantis Press SN - 2352-5401 UR - https://doi.org/10.2991/rare-16.2016.87 DO - https://doi.org/10.2991/rare-16.2016.87 ID - Gopinath2016/11 ER -